any of the tropical and subtropical bulbous plants constituting the genus Crinum, of the amaryllis family, usually having umbels of large, showy flowers.
cri·num (krī'nəm) n. Any of various bulbous plants of the genus Crinum, native to warm regions and having strap-shaped leaves and showy umbels of variously colored flowers. Also called spider lily.
[New Latin Crinum, genus name, from Greek krinon, lily.]